<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }

        .top {
            width: 100%;
            height: 90px;
            background-color: darkorchid;
            line-height: 90px;
            text-align: center;
        }

        .box {
            height: 650px;
            width: 100%;
        }

        .left {
            width: 150px;
            height: 650px;
            background-color: rebeccapurple;
            float: left;
        }

        .left a {
            text-decoration: none;
            color: aliceblue;
        }

        .left li {
            text-align: center;
            border-bottom: 1px solid #999;
            height: 50px;
            line-height: 50px;
        }

        .left li:hover {
            background-color: orange;
        }

        .right {
            height: 650px;
            float: right;
        }
        iframe{
            width: 1499px;
            height: 650px;
        }
    </style>
</head>

<body>
<div class="top">
    <h1>后台管理系统</h1>
</div>
<div class="box">
    <div class="left">
        <ul>
            <a href="emp.html" target="emp">
                <li>员工信息</li>
            </a>
        </ul>
    </div>
    <div class="right">
        <iframe src="emp.html" id="emp" name="emp"></iframe>
    </div>
</div>


</body>

</html>